Dehairing machine



May 21, 1940.

s. J. MARQUARDT 2,201,297

DEHAIRING MACHINE Filed July 13, 1938 2 Sheets-Sheet 1 INVENTOR.

5. BY $774.2 gm? cZZ ATTORNEY.

2 Sheets-Sheet 2 III S. -J. MARQUARDT DEHAIRING MACHINE Filed July 13, 1938 Mu I H I II May 21, 19 40.

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' ATTORNEY.

Patented May 21, 1940 UNITED STATES PATENT OFFICE 4 Claims.

The invention relates to dehairing machines and particularly to devices for dehairing hogs. The mechanical dehairing of a hog is more or less difiicult due to the various curvatures of the carcass and for this reason the devices that make use of scrapers are not entirely satisfactory. The head is most difficult to mechanically dehair.

The object of my invention is to provide a machine having novel means to remove hair from a carcass irrespective of the shape or the various curvatures of the carcass.

The invention consists of revolubly mounted coiled members adapted to engage the surface of the carcass and remove the hair therefrom.

The invention is illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of a machine embodying the invention.

Fig. 2 is an end elevation of the machine.

Fig. 3 is a fractional plan view of the machine.

Fig. 4 is a view showing a portion of one of the dehairing units, including a portion of the shaft and spring surrounding the shaft.

Referring to the embodiment of the invention illustrated in Figs. 1-3, is a suitable frame consisting of the uprights 2 and supporting a tank 3 having an open top. A plate 4 is suitably mounted on the opposite upper ends of the end walls of the tank and supports two bearings 5, 6 which support a stationary shaft 1. A series of collars 8 is mounted on the shaft and each collar has two pins 9, ID that project upwardly at a selected angle toeach other. The sockets |2 are pivotally mounted on the pins respectively and receive respectively the lower ends of the flexible shafts I3, l4. As shown in Fig. 2 each shaft |3, |4 inclines outwardly and in Fig. 1, each shaft is shown as inclining forwardly or toward the discharge end of the machine. The coiled springs I5, l6 are secured at opposite ends to the shafts l3, M respectively. The upper end of each shaft I3 is supported in a bearing I! mounted on a bar l8 that is supported on the frame uprights 2. A

bevel gear I9 is secured to the extremity of each shaft I3 and meshes with a bevel gear 20 that is secured to a shaft 2| supported on the frame and driven through the pulley from any suitable source of power. The upper portion of each shaft I4 is similarly carried by a bearing 22 and driven by the bevel gears 23, 24, gears 24 being secured to the shaft 25 which is driven synchronously with the shaft 2|. Each coiled spring is formed of suitable fiat material (like a tape or ribbon of suitable thickness), and the turns are close together but sufiiciently far apart to admit the animals hair between them.

The shafts I4 and the springs l6 thereon are preferably shorter than the shafts I3 and springs l5 to accommodate the reception of the carcass from the scalding vat. The spring covered shafts form a V-shaped trough into which the carcass is laid. The rotating springs l5, l6 advance the carcass toward the discharge end of the machine and at the same time they rotate the carcass. Since the shafts I3, M are flexible the springs flex so that they accommodate the various curvatures of the carcass. The hairs on the carcass are caught between the windings of the springs and are pulled out thereby.

A suitable number of spray nozzles 26 depend above or in the v-shaped trough and they are connected to the conduit 21 which leads from a pump 28 whose suction side is connected by the pipe 29 to the tank 3. Water in the tank is maintained at the proper temperature so that hot water is sprayed onto the carcass as it passes through the machine.

A trough 3|] is suitably mounted at the discharge end of the machine and projects forwardly downwardly therefrom. A shaft 3| is mounted to rotate in the trough and carries a cylinder or drum 32 upon which is secured the opposite ends of the coiled spring 33. The shaft3l is driven in any suitable manner as by the belts 34 driven by the shaft 2|.

The trough 30 receives the carcass from the dehairing V-shaped trough and the coiled spring 33 advances the carcass to the discharge or forward end of the trough 30. The side walls of the trough 36 will be of such height as to support the carcass and its rear end adjacent the dehairing trough will be at the proper height to permit the carcass to readily move into and onto the coiled spring 33. In these respects the trough 30 and coiled spring 33 are somewhat exaggerated in the drawings for the sake of clearness.

What I claim is:

l. A machine for dehairing an animal comprising a plurality of revolubly mounted coiled resilient members adapted to conform to the contour of the surface to be dehaired and engage and remove the hairs therefrom, and means to rotate the members.

2. A machine for dehairing an animal com-- o prising a plurality of revolubly mounted coiled springs adapted to contact and conform to the contour of the surface to be dehaired and engage and remove the hairs therefrom, and means to rotate the springs.

3. A machine for dehairing an animal carcass comprising a plurality of revolubly mounted coiled springs forming the opposite sides of a trough to receive the carcass, the springs being adapted to contact and conform to the contour of the carcass and to engage and remove the hairs therefrom, and means to rotate the springs.

4. A machine for dehairing an animal carcass 

